| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fan motor controller and a fan motor controlling method for preventing a wasted power consumption if a foreign substance enters into rotating blades in a fan motor. <P>SOLUTION: An F_V converting circuit 12 receives an FG pulse at a frequency changed in response to a rotational speed of the fan motor 11, and outputs a rotational speed indicating voltage for indicating a rotational speed of the fan motor 11. A motor controlling circuit 15 outputs a motor control signal for deactivating a rotation of the fan motor 11 to the fan motor 11 when the rotational speed indicating voltage is a predetermined threshold value or less. <P>COPYRIGHT: (C)2007,JPO&INPIT |
